Hi Sus: Check these sites:
Hope this helps. Good luck
Cut fabric into a quarter circle,( I would use soft card to stiffen it a bit) stuck on using Mod Podge. Use cotton wall around the brim edge and a ball of cotton wool on the top(stuck on with Mod Podge). The Paint brush I would use maybe to support the hat!
HI, not sure if this is what you're looking for - https://www.youtube.com/watch?v=LK92NqQS810